About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Aluminum Reduction Technology
|
| Presentation Title |
Characterisation of off-gases from an Inert Electrode Aluminium Electrolysis Cell |
| Author(s) |
Samuel Senanu, Ole Kjos, Heiko Gaertner, Gudmundur Gunnarsson, Daniel Gunnarsson, Rauan Meirbekova, Jon Hjaltalin Magnusson |
| On-Site Speaker (Planned) |
Samuel Senanu |
| Abstract Scope |
Characterisation of the off gases from a 500 A inert electrode aluminium electrolysis cell operating at a temperature of ca. 800 °C has been conducted using characterisation units comprising Gas Chromatography (GC), Tuneable Diode Laser Spectroscopy (TDLAS) and Fourier-Transform Infrared Spectroscopy (FTIR). The off-gases detected from the inert electrode aluminium electrolysis cell have been compared to the off-gases released from the traditional Hall–Héroult aluminium electrolysis cell. All the measurements from the inert electrode cell confirmed oxygen as the main process gas during the electrolysis process. Hydrogen fluoride, HF, which is assumed to result from reactions between moisture in the alumina raw material or the surrounding air and the fluoride melt, was also observed together with gases assumed to come from air introduced, such as nitrogen and CO2. There were no indications that these gases came from the production process. A very small amount of SiF4 was also detected. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Aluminum, |